🛡️ CVE-2021-26272 — ckeditor4

⚪ Unknown ✅ No Known Exploit CWE-829 OSV
N/A
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Inclusion of Functionality from Untrusted Control Sphere in CKEditor 4

It was possible to execute a ReDoS-type attack inside CKEditor 4 before 4.16 by persuading a victim to paste crafted URL-like text into the editor, and then press Enter or Space (in the Autolink plugin).

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. A user must be tricked into taking some action. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality none, integrity none, availability high.

Weakness class

CVE-2021-26272 is classified as CWE-829: Inclusion of Functionality from Untrusted Control Sphere. Code is loaded from a source outside the product's control, so that source can change what runs.

Affected software

CVE-2021-26272 is recorded against 1 package.

  • ckeditor4

Timeline and source

Published on 13 October 2021 and last revised on 8 November 2023. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

nvd.nist.gov (Advisory)
ckeditor.com (Web)
github.com (Package)
github.com (Web)
www.oracle.com (Web)
www.oracle.com (Web)
www.oracle.com (Web)

Details

Severity Unknown
CVSS Score N/A
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CWE CWE-829
Public Exploit ✅ No
Source OSV
Published 2021-10-13
Updated 2026-08-12
Modified 2023-11-08
Fix URL N/A

Affected Packages

Software From version Fixed in
ckeditor4 — —

Similar Threats

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